Add proxy render

proxy-renderer.js

@@ -33,7 +33,7 @@ export const renderProxy = async (outFile, options) => {
 
       scale: options?.scale ?? 1,
       codec: options?.codec ?? "h264",
-      concurrency: options?.concurrency ?? os.cpus().length,
+      concurrency: options?.concurrency ?? 2,
       crf: options?.crf ?? 18,
       muted: options?.muted ?? false,
       enforceAudioTrack: options?.enforceAudioTrack ?? false,